A203062 Number of nX4 0..6 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor

252, 491953, 608893191, 647485600638, 710826096063039, 791448514067936533, 877818049790930479334, 972407155723593469149291, 1077696680991913000461769509, 1194519944070007772038761238940

Offset

1,1

Comments

Column 4 of A203066

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=5
..1..5..1..4....2..2..2..1....1..6..5..1....3..0..6..0....4..5..4..4
..3..5..4..4....4..5..3..1....2..6..3..3....4..4..6..5....2..6..6..6
..5..0..2..3....0..5..0..3....4..4..5..1....2..4..6..0....2..2..4..6
..5..6..6..5....6..5..0..3....0..0..5..2....5..2..6..1....2..0..5..4
..4..1..0..1....6..0..0..0....4..4..4..1....5..1..5..1....3..5..5..5

Crossrefs

Sequence in context: A351484 A295441 A362170 * A259452 A177302 A177303

Adjacent sequences: A203059 A203060 A203061 * A203063 A203064 A203065

Keyword

nonn

Author

R. H. Hardin Dec 28 2011

Status

approved